SEGMENT INFORMATION (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenues:
Revenue before interest income	$ 5,506,000	$ 5,650,000	$ 17,402,000	$ 18,348,000
Interest income	21,000	25,000	54,000	77,000
Total revenues	5,527,000	5,675,000	17,456,000	18,425,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	1,322,000	1,257,000	4,225,000	2,858,000
Asset Impairment Charges
Impairment of assets	599,000	0	2,276,000	0
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	259,000	305,000	(102,000)	3,984,000
Equity in income of affiliates:
Equity in income of affiliates	0	0	1,071,000	538,000
General and administrative expenses	(1,432,000)	(1,328,000)	(4,217,000)	(5,627,000)
Foreign currency (loss) gain	(61,000)	121,000	(63,000)	201,000
Interest expense	0	(1,000)	(2,000)	(1,000)
Interest income	21,000	25,000	54,000	77,000
Loss before income taxes	(1,213,000)	(878,000)	(3,259,000)	(828,000)
Intersegment eliminations | External Customer
Revenues:
Total revenues			0
Oil and natural gas
Revenues:
Revenue before interest income	4,452,000	4,503,000	13,726,000	13,415,000
Total revenues	4,452,000	4,503,000	13,726,000	13,415,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	1,293,000	1,210,000	4,093,000	2,724,000
Asset Impairment Charges
Impairment of assets	599,000	0	2,276,000	0
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	326,000	287,000	2,000	2,974,000
Contract drilling
Revenues:
Revenue before interest income	1,021,000	1,134,000	3,084,000	4,583,000
Total revenues	1,021,000	1,134,000	3,084,000	4,583,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	28,000	47,000	130,000	133,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	(99,000)	5,000	(694,000)	110,000
Land investment
Revenues:
Revenue before interest income	0	0	500,000	265,000
Total revenues	0	0	500,000	265,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	0	0	500,000	265,000
Other
Revenues:
Revenue before interest income	33,000	13,000	92,000	85,000
Total revenues	54,000	38,000	146,000	162,000
Depletion, depreciation, and amortization:
Depletion, depreciation, and amortization	1,000	0	2,000	1,000
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	32,000	13,000	90,000	84,000
Gain on sale of asset
Operating profit (loss) (before general and administrative expenses):
Operating profit (loss) (before general and administrative expenses)	$ 0	$ 0	$ 0	$ 551,000